Some quick hits on networking:
-Attend local industry nights (Google ‘Industry Night’ plus your city) and meet people who work in the bar scene.
-Connect with DJs. If you like their stuff when you see them out, buy them a drink, compliment them on their set, ask for their card, maybe help pack up their stuff when done.
-For everyone you meet who is somewhat related to the DJ scene (Photographers, Event Planners, other DJs, bartenders), take one of them out for coffee/lunch/beers at least 2-3 times per month.
People pass business along to people they KNOW. Developing connections with people in and around the Entertainment industry will lead to people calling you to pass gigs along.